MESON Chess Problem Database

Problem Display
PID: 23766 (8/R4Np1/4pkp1/3pN2n/K4bPr/4Qn2/3B3q/5R2 w - - 0 1)

Barth, Michael

Problemschack, 1996

8/R4Np1/4pkp1/3pN2n/K4bPr/4Qn2/3B3q/5R2

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bg3
      • 2.Qg5#
    • 1...Bxe5
      • 2.Qg5#
    • 1...Bg5
      • 2.Qxg5#
    • 1...Sxe5
      • 2.Qxe5#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qxg6#
      • 1...Rxg4
        • 2.Sxg4#
      • 1...Bxe5
        • 2.Bg5#
        • 2.g5#
      • 1...Sxe5
        • 2.Qxe5#
        • 2.g5#
      • 1...g5
        • 2.Qg6#
      • 1...dxe4!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qxg6#
      • 1...Rxg4
        • 2.Sxg4#
      • 1...Bxe5
        • 2.Bg5#
      • 1...Sxe5
        • 2.g5#
      • 1...g5
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(c);OGATE,P_PINP(E),P_SPINS(b)::QAB1(C)
    • B(c);OGATE,P_PINP(E),P_SPINS(b),XS(F)::QAB1(C)
    • B(c);OGATE,P_PINP(E),P_SPINS(b)::QAB1(C),XB(c)
    • S(b);OGATE,P_SPINB(c),XS(F)::QAB1(C),XS(b)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(i)
      • Vars
        • R(d);XP(E)::S(F),XR(d)
        • P(i);::QAR1(C)
      • Refutation
        • P(e);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(i)
    • Vars
      • R(d);XP(E)::S(F),XR(d)
      • B(c);OGATE,P_PINP(E),P_SPINS(b),XS(F)::B(B)
      • S(b);N_GUARD,P_SPINB(c),XS(F)::P(E)
      • P(i);::QAR1(C)
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